# -- coding: utf-8 --
import argparse

if __name__ == '__main__':
    parse = argparse.ArgumentParser()
    parse.add_argument("a", help="params means")
    parse.add_argument("-C", "--gc", default="count")
    parse.add_argument("--ga", help="params means ga", dest='simple_value', choices=['A', 'B', 'C', 0])
    parse.add_argument("--gb", help="params means gb", action="store_const", const='value-to-store')
    args = parse.parse_args()
    print args.simple_value, args.gb, args.gc